Replacement windows are short — a day, sometimes a few. Check immediately, but in a way that does not itself trigger a restriction.
1. Does it connect at all
Through the proxy it will actually work on, not your home connection. A first login from your own address ties the account to you permanently. If it will not connect, causes are in account will not connect.
2. Does it ask for a code every time
A sign the account sees you as a stranger. Causes are in code on every login; usually it is geo or device.
3. Is there a spam restriction
Check it the proper way, without sending anything — see checking for a spam block. An account that arrives already restricted should be swapped today, not after a failed campaign.
4. What about sessions
Look at the active session list. Strange devices there mean somebody else still has access. What to do about it: changing the password.
5. Does it match the description
Age, country, the promised email and password. A mismatch is a formal ground for replacement, and it is worth using straight away.
6. What not to do
Do not message anyone «to test». A first message from a fresh account in its first hour is the classic way to earn a spam restriction. None of these checks requires a single sent message.
After checking, the account goes to warm-up, not to work.
Buy accountsaged, with full session files